I have 2 15 inch mofos do i need two poweracoustik 4000D AMPS?

see this link put in your info i dont think you can run it at 1 ohm you would need two subs at 4 ohms.
Rockford Fosgate Woofer WiringWizard

sound like you have a lose wire some wear. slammin with a 15 you gotta check all your screws every now and then LOL

the newer ones sound a lot cleaner have better bass. they have redesigned it to perform better.

before you do that i would recommend seeing if you can send it in under warranty because i know that a lot of speakers when you dissemble them you end up doing more damage then good.

I don't believe they have that option available, probably because everyone would just repair their speakers and not buy more. Depending on how bad the tear is or how much foam is missing, you can buy sealer for it that works fine if you don't mind what it looks like. I have used a thin layer of clear silicone caulk to seal them up before and also used it to seal a hole in the actual speaker itself. You want to use something durable and pretty flexible when doing it, but the possibilities are endless. Hope this helps and good luck!

NEW POWER ACOUSTIK MOFO-122X 12" 2700W SUBWOOFER SUB

3.4 cubic feet
Tuned at 40 Hz
2 Ports = 4" x 8.25"


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The size of the wire has more to do with the amp's output than it does with the speakers. The wire should be the same size throughout, from speaker to box, box to amp. A minimum of 16 guage multi-strand wire. Most amps that put out up to 500 watts max or have an RMS rating in the 300 watt range should do fine with this. If you want to be on the safe side, there is no limit to how big your speaker wire can be, only how small or a minimum. If you're using a very high output amp, like over 500 watts RMS, you can use 12 ga. wire. If you want to be on target for your size, I need to know what amp you have and how many speakers you have.

you cant do it with these amps it will burn them up

Hello familia_gome,

Those MOFO-15's have dual 1ω voice coils. So the only way you can get 2 of them to present a 2ω load is to use 1 voice coil on each one with the two of them wired in series. Using both voice coils, you can get a 1/4ω load by wiring the voice coils in parallel and then wiring the subs themselves in parallel. You'll get a 1ω load with the voice coils in series and then parallel the subs. Or you'll get a 4ω load with both the voice coils and the subs in series.

Here's a link to Power Acoustik's PDF for the MOFO's. I recommend that you check out the wiring diagrams on page 3.

http://www.poweracoustik.com/SUPPORT/MANUALS/PA-MOFOWoofer.pdf

Hope this helps.